[Bug libstdc++/50880] __complex_acosh() picks wrong complex branch

[paolo at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50880

--- Comment #21 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> 2011-11-02 21:54:29 UTC ---
Author: paolo
Date: Wed Nov  2 21:54:24 2011
New Revision: 180804

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=180804
Log:
2011-11-02  Richard B. Kreckel  <kreckel@ginac.de>
        Paolo Carlini  <paolo.carlini@oracle.com>

    PR libstdc++/50880
    * include/std/complex (__complex_acosh): Fix in a better way,
    use Kahan's formula.
    * include/tr1/complex (__complex_acosh): Likewise.

Added:
    branches/gcc-4_6-branch/libstdc++-v3/testsuite/26_numerics/complex/50880.cc
   
branches/gcc-4_6-branch/libstdc++-v3/testsuite/tr1/8_c_compatibility/complex/50880.cc
Modified:
    branches/gcc-4_6-branch/libstdc++-v3/ChangeLog
    branches/gcc-4_6-branch/libstdc++-v3/include/std/complex
    branches/gcc-4_6-branch/libstdc++-v3/include/tr1/complex